The Denver Post – Over the past two decades, as the Internet and technology boom altered how other brick-and-mortar businesses operated, the U.S. casino industry continued to generate virtually all of its gaming revenue offline. That’s now changing state-by-state, and a domino effect is expected to soon take hold. This year, three states legalized some form of online gambling within their borders, with New Jersey recently joining Nevada and Delaware to allow live Internet-based casinos. Quietly, Colorado lawmakers and industry officials drafted legislation late last session to authorize Internet poker. Though that effort stalled, the industry says it will continue…